Have you ever made a tin can telephone? Oh, you seem to think that cell phones are the best way to talk to your friends, hmm? Well you my friend, are waaaaay wrong!
Before the days of stationary telephones and cellular telephones, kids used to spend hours outdoors communicating with friends via a Tin Can Telephone! Don’t believe me? Try it for yourself:
How to Make a Tin Can Telephone:
What will You Need?
1. An adult to help
2.Two metal cans, clean and dry (Be sure that there are no sharp edges)
3. Ten to Twelve feet of a piece of small diameter string such as kite string or nylon string
How to Assemble:
1. Make a ‘Tin Can Telephone’ by punching a small hole in the bottom of each can. Each hole should be just large enough so that the string will go through.
2. From the outside, insert one end of the string into the hole in one can. Tie a couple of knots in the end of the string so that it will not slip back through when pulled tight. Do the same with the other end of the string using the other can.
3. With one person holding each can, stretch the string so that it is tight. One person talking into one can sends vibrations through the tightened string to the other can. The person with their ear to the other can will be able to hear what was said.
Seems like quite the thing, huh? How does it work?
When someone speaks or makes a sound, the air ripples or vibrates. The word ‘vibrate’ means to move up and down, or back and forth rapidly. Our ears collect the sound vibration, or sound waves and send them to our brains. Then we hear the sound.
When you pull the string tight and talk into one of the cans of your tin can telephone, the sound vibrates across the taut string to the other can. The person at the other end of the telephone hears your message after his or her ears collect the sound vibrations and send them to the brain to be processed.
It’s like magic! Enjoy talking to your friends the “old-fashioned way”!
*Thanks to DSOKids for these excellent instructions!Tags: activity, can, fun, how to, kids, outdoors, telephone, tin